DESCRIPTION
●The LT®1028(gain of –1 stable)/LT1128(gain of +1 stable) achieve a new standard of excellence in noise performance with 0.85nV/√Hz 1kHz noise, 1.0nV/√Hz 10Hz noise. This ultralow noise is combined with excellent high speed specifications (gain-bandwidth product is 75MHz for LT1028, 20MHz for LT1128), distortion-free output, and true precision parameters (0.1µV/°C drift, 10µV offset voltage, 30 million voltage gain). Although the LT1028/LT1128 input stage operates at nearly 1mA of collector current to achieve low voltage noise, input bias current is only 25nA.
●The LT1028/LT1128’s voltage noise is less than the noise of a 50Ω resistor. Therefore, even in very low source impedance transducer or audio amplifier applications, the LT1028/LT1128’s contribution to total system noise will be negligible.
●FEATURES
●■ Voltage Noise
● 1.1nV/√Hz Max at 1kHz
● 0.85nV/√Hz Typ at 1kHz
● 1.0nV/√Hz Typ at 10Hz
● 35nVP-P Typ, 0.1Hz to 10Hz
●■ Voltage and Current Noise 100% Tested
●■ Gain-Bandwidth Product
● LT1028: 50MHz Min
● LT1128: 13MHz Min
●■ Slew Rate
● LT1028: 11V/µs Min
● LT1128: 5V/µs Min
●■ Offset Voltage: 40µV Max
●■ Drift with Temperature: 0.8µV/°C Max
●■ Voltage Gain: 7 Million Min
●■ Available in 8-Pin SO Package
●APPLICATIONS
●■ Low Noise Frequency Synthesizers
●■ High Quality Audio
●■ Infrared Detectors
●■ Accelerometer and Gyro Amplifiers
●■ 350Ω Bridge Signal Conditioning
●■ Magnetic Search Coil Amplifiers
●■ Hydrophone Amplfiers
